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Date: Tue, 15 Apr 2008 17:46:46 -0700 (PDT)
From: Christoph Lameter <clameter@sgi.com>
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To: Ingo Molnar <mingo@elte.hu>
cc: Yinghai Lu <yhlu.kernel@gmail.com>,
       Linus Torvalds <torvalds@linux-foundation.org>,
       Pekka Enberg <penberg@cs.helsinki.fi>, linux-kernel@vger.kernel.org,
       Mel Gorman <mel@csn.ul.ie>, Nick Piggin <npiggin@suse.de>,
       Andrew Morton <akpm@linux-foundation.org>,
       "Rafael J. Wysocki" <rjw@sisk.pl>, apw@shadowen.org,
       KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Subject: Re: [patch] mm: sparsemem memory_present() memory corruption fix
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On Wed, 16 Apr 2008, Ingo Molnar wrote:

> this is the only call to memory_present() we do in 32-bit arch setup, so 
> it's required.

We could clip there if SPARSEMEM is configured. I wonder if this affects 
other platforms that need HIGHMEM support?